Rheostat-controller.



No. 676,426. Y Patented aune i6, 190i.

Y Y l .1. mLLoN. L

.RHESTAT CNTRLLEVR.

(Animation ned mr. 22, 1901.1 v

, 2 Sheets-Sheet l.

(lo Model.)

@wwwa y n 1555.1. WWM

No. 676,426. Patented :une la, |901.

. J. nlLLoN.

RHEOSTAT CONTROLLER.

(Application flied Mar. 22, 1901.)

2 Sheets-Sheet 2.

(No Modem Vzo nation of parts h y arc of a circle upon the panel are contact-terthat isput in circuit with a source of elec- JOHN D1LLoN,or MILWAUKEnivIscoNsm.

nH'sosTAT-o'oNTRoLLER.

srnczmoarrou recurring pm of Lem ramt no. 676,426, amd June 1a, 1901.

Application filed March 22, 1901. Serial No. 52,322. lilo model.)

To all whom, t mayconcerm v `1 ?e jitvknown that I, JOHN DILLON, a citizen of the United States, and a resident of Milwaukee, in the county of Milwaukee and State of Wisconsin, have invented certain new and useful Improvements in Rheostat- Controllers; and I do hereby declare that the following isa full, clear, and exact description thereof.

My invention has for its object to simplify, and consequently cheapen, the manufacture ofr-rheostnt-controllers analogous to the one set forth in my latent No. 657,159, issued September l, 1900, said invention consisting in the peculiarities of construction and combiereinafter particularly described, with reference to the accompanying drawings, and subsequently claimed.

Figure l of t'he drawings represents a partlysectional front elevation of my im proved rheostat-controller mechanism, the rheostat-a'rm being lockedon fullresistance and the electric circuit broken; Fig. 2, a sectionalview of said mechanism, this View being indicated by lines 2 2in Fig. l; and Fig. El, a detail kplan View, partly in horizontal section, on lines 33 in Fig. 2. c

Beferringby letter to the drawings, A indicafes a panel of suitable material upon which the mechanism in accordance with my invention is mounted. Arranged .in series on an minals li of a corresponding `series'of resistance-coils (not shown up, but common in the art) to constitute the bridge of a rheostat tricnl energy. if

Thepanel A is provided with bearings for',l ,a shaft C, and a crank D is rigid on one end of the shaft. In rigid connection with shaft C is the cent1-nl hub of 9. plate E, and links l G have pivotal connection with the extrem-ities of theplate, the ends of the links farthest from the plate being longitiulinnlly slotted. 'lhe slot in link l? is engaged by a lat 'lever is provided with a. swivelj,

a spiral springdlv Y l yundercompression between; the swivel and ncra-l stud l; ol,l the rheostnt-arm il, in pivotal connection with panel A, the general construction aniltviring ol' snid arm heini:r such vas .may bc most. convenient or desirable.

A link I is shown connecting thc rlicosiat arm with la frame J, in connection with the rod K' of a piston' K, that rcclprocates in a i preferably oil,

cet c, by which to regulate 4is practical to vary its construction, se described in said patent, or to substitute some other retarding mechanism with the rheostat-arm. f Atriangular lateral lug clot the rheostatarm engages with a. latch O, that constitutes' one arm of a bellcrank in connection with the that lplays on ,its

ted by a pipeM,

from one side tothe other Y in connection' panel A, and the other arm O' of this crank K,

`is'conpled to an extremity of ai rod lP, for

which guides e are providedl on saidvpanel, and a stud f at the other end of the rodengages a longitudinal slot of a link'Q in pivotal union with a lever tei-mediate of its extremities loose on a' pivot g in connection with the aforesaid panel. Like in my former patentv aforesaid the hub of the lever R is provided with a segmental notch engaged by a lateral lug ifoi n main switch-bar S, that is also loose on the pivot g' supportingsaid lever. One end of lever R is provided with a la ral stud i, that engages the slot in link G, nd the other end of said engaged by a rod T in pivotal rconnection with ApanelA, being arranged on said rod tension-nut. The usual insulating-stops are arranged on panel A in opposition to the swivel end of lever R and the 'moin switchbar.` v

The panel A is provided lvith contact-s m for the main switch-bmg and said panel is alsol provided with contacten. p for a reversing' switcl1-ba1V,thnt hns a central hub loose` on I shaft G, above specified, this reversing switchbarbeing. thus balanced. n, 'lho plate E is provided with lateral dizimctrically opposite lugs q, und by means of:

R, having a hub i11-A these lugs'the reversing Swlclrbnr is actuated to swing from contacts n to contacts Q,

- :is in the patent above noted.

Referring particularly to theinovnblc parts ol' the assemblage, (best shown in Fig. 1,)if shaft C bepartinlly rotated in the proper du "IDO ' rection byineans of its crank D the plate will' be swung to pull link F down andlinkGr` up, whereby there is initial swing of leveiR to compress the spring U on rod. T and bring a'boundary of the segmental notch in the le'- ver-hnb in con tact with the lng h of the'main switch-bar S, while at the same time the link Q, in'connection with said lever, inovesdowa f of rod P, that is in connection.

on the ist n'd with the.bell-crank ltchthat for the' time being supportsthe rheostat-arm'. On theinstant thelever R is moved far enough to have by this armisvthen free toiautomatically the swivel end thereof fpass-the line ofcent'er the -:nain switch-bar. will be automatically thrown into immediate engagement ywithitsy contacts by the expansive forcent. spring Uv operating on said lever, the slot fin' link G en.;

, .'gaged -b'y lever-stud i permittingthis nuove'. l `ment, and at the same time there is pull of link o n -rodP to swing the bellQcranklatch clear of llng cl on the rheostat-Varin,r wheren travel `in the direction` necessary toont ont resistance to. electric current,l whereby the motor'put in crcni't with the rheostlat is even-` ituallyrnn at full speed, the descent of said rheostatarrn being retarded .by means such "as a-re'ghereinspecified. Now it plate be swungtc pushllintaF up and li-nk G downit is obvious that the rh'eos'tatarm will be swung in'tnef'direction' necessary to cnt in; all of the resistance, andat the same timethe lever R will be-'actnated to snap-the main switch-bar ,away from its contacts; as well aste' cause a 'swing !Ithe bell-crank latch in' :position lto catch under the" lng d ofssaid rheostat-arm.

.If'the plate E beoperated to cause an exertion of force by its lngs q on balanced reversing switch-bar V tobrng this barl away' from contacts n.to contacts p,.this operation -will take place 'in advance ofthe swing of* the 'main switch-.bar to close circnit. A-reto rn of plate 'Eto the normal position herein shown'will of courseope'rate to again open the main switch,V

the' reversing switch-bar being left on con.-

- tacts" ,'fbnt'if the. throw of said`plate-is cons ltherefversin -swit'ch s'thrown'the operationE takesiplace hile the main circuitis' open, thel thrcni-v being either previous to closingo! said;V

circuitrsnbsequent to opening ofsamerac-i c ording tothe throw of plate E n.1 ')resaid.'.4

.. tinne said reversing switch-bar will beagain brought on its contacts n' afterthe opening of said uiain switch'.y Hencef 'it' will be und erstood (as in my former patent) that at any time There are times whenthe mainswitch-bar S ifsy'thrown from its contacts m and the inotor left'runnng under momcntnm-` If at such' a time reversing. switch-bar V isthrown from one set tothe other ofits contacts n 1J, an electric arc will form' and. canse sparking detrimental to theswit'ch unless sonie'provision is had to overcome such-a result. IIencel pre.- Vfer to utilize a contact r,-having electrical connection with an armature-contact of said switch and a high resistance s', thesnpplementary contact beingarranged in the path lengthbeing such thatsad bar in its swing ytncts in' either direction of throw will fora said resistance instead of; momentarily openl in which bridgembnti ingnfollers "u are hung, these `brncketa'androllers being of conductor. material end ntiliz'ed with or without brush r, e

y Hav-ingv thus, described my invention, what I claim as new, and .desireto seen reby- Letters Patent; Ai s'` 'I .v 1. A pivotal bar,v latch mechanism for theI rheostat-ari-z'nr.i

linksin connection with the plate havingloose:

bar, a. lever constituting part of spring-snap'.

in connection', with the plate having ,loose'f play union withfsad .rheostat-arln and lever, and a reversingr switch-bar controlled by said plate. Y

stitutes a latch engageable with said lng, a rod `in connection-with the other armof the be l1- crank, guides for` the rod, a main-switch-har -a lever constituting part of spring-snap mech playnnion with the `.aforesaid rod, aswingfA 'arm and lever.` 1.1 l I g 4. A pivotal rheostatarm having means in connectiontherewith tb retard its free grain' tnting part of spring-snap mechanism in consaid rheostat-arm and lever.-

connection therewith to retard-its free gravity swing, a main switch-bar, a lever const1-` tuti ng part of spring-snap mechanism in con* junction with said switch-bar, latch 'xnechani lever, aswing-plate, links in connection with the plate having loose-play union with said rheostatarm and lever; and a -reversmg from one to anotherfset of'theformer con- Tdinsnhecontinnons contact andlprewent herein shown. the brush be omitted, there l' will bea corresponding reduction of1 fr`iction.

jilnction withsaid switch-bar, latch fmechanism for the rheostat-arnicope'rative with the lever, aswing-platc,and links in connection with the plate, having loose-play union with ism -for the 1l1eostatarm cooperative with the of nu extremity of 'reversing switch-b anV, .its y i vtimeshnrlrcircnitthemotor-armatnre'through ing the arrnaiax're-circdlt, as would be otherf 'bridge,said arnris .provided with brackets t, 8o-

rheostat-ar'm, main 'switchgbar, 'alever constituting part of spring-snap v f mechanism in conjundtioniwithlsaidswitch.- -y

.9 Aoperative with the lever, a swing-plate, and

'play union with said rheostat-arm and lever;- 2. A! pivotal rheostnt-arm'a main twitch-v anism .in conjunction wth theswitch-bar, l link in connection with the leverliaving looseplate, andlinks in'connection with the plate f 3': ,having looseplay. nnion Awith -said rlie'ostatf ity-swing,'amain s'witchbar;-a.leverconsti# switch-bar controlled by saildpplate.

6. A pivotal rheostat-varm, a'main switch I $16,426. N 3 har, moansyink connection Wiph thcarm and resistance and au armamre-conmct of thc re- 2o f bar for operating ther former, a. balanced rcversngowich. o 4 Voisingswtch-bar,means Whercbythothrow 8. .A 'pivotadl .ricostatfarm provided with of the reversing switoibbm is had when main roller-contacts, a main switch -bar, a level' 5' switch is opcneithcr previous to closing cirf constituting pax-5 of a spring-soap mecha.

vcuit or subsequent-toopcning of same, andv ism in conjunction with said switch-bar, z5

means for preventing sparking when said rolatch mechanism for the rheoStat-arm coversing switch-bar' is thrown from oe to anoperativo with the lover, a swing-plato, and

other sot of contacts. f links in connection with tho plate having 1ro 7. A pivotal rhcostat-arm, a main swizchlooscrplay union with said-xhcosmt-arm and narymeans in connection with thcrmm and lever. y 3o bm' for oporating the former, a, balanocd'ro- In cstimony that I ola-im the fonegoing' I voringswitcbbar, means whereby the throw, have hereunto set my hanr at Milwaukee; in

.f of the .reversing switch-haria had when main the coun?I f of Milwaukee and State of Wis 'z5 switch iS' open either previousto closing; crcousin, in the presence of two witnesses" cuit; or subseqocn; toopehng of same, and a JNO. DILLGN.

` supplomcutm'y contact arrangoci in the path Witnesses: of au cxtrem'ity of said reversing switch-bar 4 N. E. OLIPH'ANT,

nd'naving electrical connection with high B.' ROLQFF. 

